TDC1000 Texas instruments

TDC1000

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TDC1000

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Описание

The TDC1000 is a fully integrated analog front-end (AFE) for ultrasonic sensing measurements of level, fluid identification/concentration, and proximity/distance applications common in automotive, industrial, and consumer markets. When paired with an MSP430/C2000 MCU, power, wireless, and source code, TI provides the complete ultrasonic sensing solution.TIs Ultrasonic AFE offers programmability and flexibility to accommodate a wide-range of applications and end equipment. The TDC1000 can be configured for multiple transmit pulses and frequencies, gain, and signal thresholds for use with a wide-range of transducer frequencies (31.25 kHz to 4 MHz) and Q-factors. Similarly, the programmability of the receive path allows ultrasonic waves to be detected over a wider range of distances/tank sizes and through various mediums.Selecting different modes of operation, the TDC1000 can be optimized for low power consumption for battery-powered flow meters, level instrumentation, and distance/proximity measurements. The low noise amplifiers and comparators provide extremely low jitter, enabling picosecond resolution and accuracy for zero and low flow measurements.

Measurement range: up to 8 ms
Operating current: 1.8 µA (2 SPS)
Transmitter channels TX1/TX2:
- Supports single or dual-transducer application
- Programmable excitation: 31.25 kHz to 4 MHz, up to 31 pulses
Receiver channels RX1/RX2:
- STOP cycle-to-cycle jitter: 50 ps_RMS
- Low-noise and programmable gain amplifiers
- Access to signal chain for external filter design
- Programmable threshold comparator for echo qualification
- Automatic channel swapping for differential Time-of-Flight (TOF) measurement
- Programmable low power mode for long TOF measurements
Temperature measurement
- Interface to two PT1000/500 RTDs
- RTD-to-RTD matching accuracy 0.02°C_RMS
Operating temperature range: –40°C to 125°C

Type	Analog front-end (AFE)
Features	Direct drive
Gain (min) (dB)	20
Gain (max) (dB)	41
Number of input channels	2
Supply voltage (min) (V)	2.7
Supply voltage (max) (V)	5.5
Operating temperature range (°C)	-40 to 125
Interface type	SPI
Rating	Catalog